What is the role of the gametophyte in ferns quizlet?
What is the role of the gametophyte in ferns quizlet?
What is the role of the gametophyte in ferns? produce gametes and protect the developing zygote.
Where is the gametophyte of a fern?
The prothallus is the fern gametophyte. It is a green, photosynthetic structure that is one cell thick, usually heart or kidney shaped, 3–10 mm long and 2–8 mm broad. It is very difficult to find in the bush as it is so tiny.
What happens to the gametophyte in ferns?
This fertilized egg develops into an embryo, which is the beginning of the diploid sporophyte generation. The first tiny leaf of the sporophyte emerges from the bottom of the gametophyte (which disintegrates) and grows upward and soon becomes a plant we see as a fern or horsetail.
What is the role of the gametophyte in bryophytes?
The gametophyte is the dominant life phase in the Bryophytes. The gametophyte produces structures known as antheridia and archegonia, which produce the male and female gametes respectively. The zygote and resulting sporophyte will develop and grow out of the archegonia on top of the gametophyte.
What is the role of the sporophyte in Ferns?
The basic function of the sporophyte is to create spores – that much is known already. The spores, in turn, produce the gametophytes that give rise to the male and female gametes through the process of meiosis. Without the sporophyte, the life cycle of plants will be disrupted and plants will not be able to reproduce.
Why gametophyte is called so?
The gametophyte is the sexual phase in the life cycle of plants and algae. It develops sex organs that produce gametes, haploid sex cells that participate in fertilization to form a diploid zygote which has a double set of chromosomes.
What does the gametophyte contains?
Flowering plant gametophytes are sexually dimorphic. The female gametophyte, or embryo sac, contains two gametes, the egg cell and the central cell, and subsidiary antipodal and synergid cells, whereas the male gametophyte, or pollen grain, contains three cells: two sperm cells inside the vegetative cell.
How is a gametophyte created?
A gametophyte is created when the sporophyte generation produces spores. Spores are made by meiosis or cell division that reduces the number of chromosomes by half. These haploid cells produced by sporophytes are spores. Spores will then undergo mitosis to grow into a multicellular haploid gametophyte.
What does a gametophyte produce quizlet?
The gametophyte produces haploid gametes by mitosis 2. Two gametes unite (fertilization) and form a diploid zygote.